Steel lay brace



April 1, 1930. c. J. LlNDEGREN 1,752,443

STEEL LAY BRACE Filed May 5, 1929 3 Sheets-Sheet l C02"[ dime 59m Q April 1, 1930. v c. J. LINDEGREN 1,752,443

STEEL LAY- BRAGE g; G Ir- ATTORNEYS April 1, 1930. c. J. LlND EGREN STEEL LAY BRAGE Filed May 3, 1929 3 Sheets-Sheet 5 ON 2 I49.

I NVEN T 03 O'AHL r]. L/NDEGRE/V M A M-g AT TORNEYS Patented Apr. 1, 1930 UNITED STATES PATENT OFFLCE CARL J. LINDEGREN, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO CROMPTON&

KNOWLES LOOM WORKS, OF WORCESTER,

MASSACHUSETTS MASSACHUSETTS, A CORPORATION OF STEEL LAY BRACE Application filed May 3,

This invention relates tolays for looms and it is the general object of the invention to provide a lay of'rigid but light construction.

In the construction of a loom to operate at a relatively high rate of speed it is desirable that the moving parts be as light as possible. On the other hand, the increased speed subjects the moving parts to greaterstrain and it is therefore necessary that they be correspondingly stronger. It is an important object of my present invention to provide a loom lay having a pressed steel brace which extends preferably through the length of the lay and takes the place of certain relatively heavy parts which have heretofore been em ployed in lay construction.

The drop box end of a lay is ordinarily provided with a horizontal slot through which the picker extends. When this slot is cut out of sheet steel there is likely to be burrs leftalong the edges of the slot the effect of which would be to cut the picker. If the sheet metal at the edges of the slot be turned at right angles to form small flanges alongwhich the picker can slide the burrs then extend toward the picker stick. It is desirable to deform certain parts of the lay end in order to stiffen the same and I find that corrugations for this purpose can be so located as to protect the picker stick from the burrs on the sides of the slot.

In usual broad loom construction there isconsiderable length of the lay extending ing cranl: shaft and this length of the lay has a tendency to move beyond its proper extreme positions by reason of its momentum. It is further object of my inventionto form a sheet steel lay end with horizontal bracing portions or flanges the effect of which is to res st movement of the lay end. due-to m0- mentum. This movement is reduced somewhat due to the fact that the lay end is lighter as a result of the sheet steel construction.

WVith these and other objects in View which will appear as the description proceeds, my invention resides in the combination andarrangement of parts hereinafter described and set forth in the claims.

1929. Serial NO. 360,190.

of a loom lay having myinvention applied 1 thereto,

Figs. 2 and 3 are enlarged vertical transverse sections on lines 22 and 33, respectively, ofFig. 1,

Fig. 4 is a vertical section on anenlarged scale through that-portion of -the steel brace which acts as a'la-y end for the drop box end of the loom, being taken on line 44- of Fig. 1,

Fig. 5 is a perspective viewof the lay brace as viewed from the rear,

Fig. 6 is an enlarged rear elevation of the right hand end, of-Fig. 1, certain parts being shown which are omittedin Fig. 1,

Fig. 7 is an end elevationtak'en in'the-direction of arrow 7, Fig. 6,

Fig. 8 is a detailed top plan viewtaken in the direction of arrow 8, Fig. 6,

Fig. 9 is a top plan viewof-the lay,

Fig. 10 is a detail front elevationof thelay, and

Fig. 11 is a horizontal section on line and they support a horizontal beam of wood indicated at 11 across'the top of which may Xtend the race plate 12. The wood hasa substantially vertical back 13 and horizontal bottom 14 Asshown in Fig. 2 thebox plate-15' {extend over the top of the lay wood and ma the latter is cut away as at 16 to provide clearance for an ejected Weft bobbin when the lay is employed inweft replenishinglooms.

In carrying my invention into effect 1 provide a lay bracing element 20 shown in Fig. 5, said element being sufficiently-long: to extend substantially the full length of the lay, that is, it preferably extends along the back of the boxes as well as the intermediate portionof the lay where-the lay beam is located. The central portion ofthe element is provided with a vertical portion 21 and a-horizontal part 22. The part-22 which lies between the swords and under the lay woodispre ferably of the full width of the latter as suggested in Fig. 3. Bolts 23 extend through the vertical portion 21 and the wooden beam and serve to hold the element 20 to the lay beam.

The portion of the bracing element 20 which extends behind the single box B shown at the left of Fig. 1 has the part 22 reduced in width as at 2% so not to extend in the path of an ejected bobbin. AS shown at the left hand side of Fig. l a bearing 25 is bolted to the lay sword by means of bolts 26 and. also is secured to the lay beam by means of bolts 27 which extend through the portion 21 of the bracing element and into the wooden beam.

At the right hand end of the lay as viewed in Fig. 1 I have made provision for drop boxes. At this end of the loom the element is formed preferably as shown in Figs. 1, l and 5. The vertical dimension of the element 20 is greater at the drop box end of the lay than at the opposite end and has a vertical web 30 through which extends a slot 31.. The slot is formed by punching out a portion of the web and bending the edges of the slot horizontally to define smooth opposing horizontal surfaces 32 alon which may slide the picker P indicated in dotted lines in Fig. 4. The picker slides along a picker spindle 33 the left hand end of which is received by a bearing member 34; and the right hand end. of which is supported by a spindle holder 35. The picker spindle lies on the rear side of the web 30 and the picker sgiclr indicated in dotted lines in Fig. l at 36 slides between the spindle 33 and the web.

As previously stated the stamping of the slot 31 in the web leaves small burrs which would act to cause undesirable wearing of the picker stick 36. In order to prevent this wearing 1 form parallel corrugations 37 in the web the rear portions of which present convex smooth surfaces 38 along one or both of which the picker stick may slide. It will ordinarily be sufficient so far as protecting the picker stick is concerned to provide but one depression but the element 20 is stiffened by said corrugations and it is therefore desirable to employ two in order that the lay ends may be made as stiff as possible. It will be noted in Fig. i that a line tangent to the surfaces 38 passes to the right of the edges of the slot 31 and the latter are therefore out of contacting relation with respect to the picker stick at all times.

The previously mentioned bearing member 34 is held to the lay wood by means of bolts 39 which extend through the vertical portion 21, said member being also held to the lay sword 10 at the right hand side of the loom as viewed in Fig. 1 by bolts 40. Bolts ll serve to secure the web to the bearing member 34.

The drop box end of the element 20 has extending therethrough two bolts 43 which pass through the web 30 and into a hollow block 44 shown particularly in Figs. 6, 7 and 8. This block has bolted to the under side thereof as at 45 the upper end of a brace rod 456 the lower end of which is secured to the rocker iron 47 of the loom. The outer box guide i8 is secured to the block by means of bolts 49. A shuttle check stand 50 may be secured to the upper surface of the block 44- and support a strap 51 positioned to engage an incoming shuttle to check the movement of the same. The check may be substantially the same as that shown in patent to Doyle No. 553,516. A gang of shifting boxes B may slide vertically between the guides 2 and 48 in well-known manner.

The upper and lower parts of the web 30 are provided, respectively, with horizontally extending flanges and 61 under the upper of which the picker stick moves, said flanges stiiiening the drop box end of the brace. It is to be noted that the lay beam 11 does not extend beyond the right hand side of the right lay sword 10 as viewed in Fig. 1, all of the lay structure beyond that point being connected to the web 30 of the element 2d. The flanges 60 and 61 extend inwardly to points adjacent the nearer lay sword, there 'Jy strengthening the brace, the upper flange extending across the rear side of the sword. The web 30 is further strengthened by a flange (-39. which extends partly from the web and partly from the portion 21, this flange 62 resisting the momentun'i of the web and boxes when the lay reaches the extremes of its movements. The webs 60, 61 and 62 form a pocket for the bearing 3i.

By referring to Fig. 1.1 it will be seen that the box guide has a rib 71 which lies against an edge of the adjacent lay sword 10. In order to make room for this rib the web 30 is bent as at 72, that portion 73 of the web which lies immediately behind the sword 10 being offset from the main body of the web 30. Reference to Fig. 11 will also show that the bearing member 3% has an arm 74 which has tircaded therein the inner end of the picker spindle 33. The arm Tel; has a head 75 which projects forwardly of the part 73 of the web, the bend 72 providing room for the head so that the latter does not interfere with the web. The main part of the web is slightly behind the plane of the reed and the bend stiliens the bracing element.

During the operation of the loom the drop boxes will move vertically in their guides by mechanism not shown but well understood and the lay will be reciprocated in a horizontal direction by means of connectors attached to the bearings 25 and 34:. I have found that a lay made according to my present invention can be operated successfully at a high rate of speed and is sufficiently stiff to withstand bending strains incident to the high speed.

From the foregoing it will be seen that I have provided a simple form of brace for a loom lay comprising a sheet metal element extending preferably the full length of the lay and so formed as to strengthen the latter. It will further be seen that at the drop boX end of the lay I have provided the struck out corrugations or elements 38 which not only stiffen the lay end but also protect the picker stick from the burrs which may be on the sides of the slot 31. It will also be seen that the web 30 has extending therefrom a plurality of horizontal flanges the effect of which is to stiffen the same. Furthermore, the flanges and 61 extend across the wooden lay sword 10 and act to reinforce the lay end at the box end of the loom.

Having thus described my invention it will be seen that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but what I claim is:

1. In a loom lay having a beam and swords, and operating witha picker stick, a lay end formed of sheet metal and having parallel spaced ribs extending perpendicularly from the body of the lay end to define a picker slot, and elongated guides pressed out of the plane of the body portion of the lay end and extending farther from the lay end body than do the ribs to prevent engagement between the ribs and the picker stick, the guides stiffening the lay end.

2. In a loom lay having a beam and swords, and operating with a picker stick, a lay end having a sheet metal substantially vertical web, parallel spaced ribs struck from the web and defining between them a picker slot, said ribs lying substantially perpendicular to the web and presenting smooth surfaces along the edges of the slot, and an elongated guide struck from the web on the same side thereof as the ribs and extending farther from the web than do the ribs, the guide stiffening the web and engaging the picker stick to keep the latter away from the ribs.

3. In a loom lay having a beam and swords, and operating with a picker stick, a sheet metal lay end having a substantially vertical web provided with a picker slot, ribs struck from the web and extending perpendicular thereto to define the sides of the slot, and a stiffening element struck from the web and lying on the same side of the web as the ribs, said element having a rounded surface farther from the web than the edges of either rib to engage the picker stick and keep the latter from engaging the rib.

4. In a loom lay having a beam and swords, and operating with a picker stick, a sheet metal lay end having a substantially vertical web provided with a picker slot, ribs struck from the web and extending perpendicular thereto to define the sides of the slot, and a pair of stiffening elements struck from the web and lying on the same side of the web as the ribs, the slot lying between the elements, said elements having rounded surfaces farther from the web than the edges of either rib to engage the picker stick and keep the latter from engaging the rib.

5. In a loom having a lay and a shuttle, a lay end formed of sheet metal, a picker to engage the shuttle, a picker stick to move the picker and shuttle, a picker spindle on which the picker moves, corrugations on the lay end running in the direction in which the shuttle moves, said corrugations guiding the stick to keep the latter away from the lay end as said stick moves to propel the shuttle.

6. In a loom having a lay along which a shuttle moves, a picker to engage the shuttle, a picker stick to move the picker, a lay end carried by the lay, said lay end formed of sheet metal and having struck therefrom parallel spaced ribs to define a slot through which the picker extends, said picker resting on and movable along one of the ribs, and a corrugation formed in the lay end and extending parallel to the direction of movement of the picker stick, said corrugation engaging the stick to prevent the same from engaging the ribs.

7. A lav end for a loom operating with a picker and picker stick, said lay end formed of sheet metal and having a rib struck from the body thereof and forming a. support along which the picker moves, said lay end havin a slot through which the picker extends and t e rib defining one edge of the slot, and a corrugati on struck from the lay end on the same side thereof as the rib and extending beyond said rib to prevent the picker stick from engaging the rib, said corrugation strengthening the lay end.

8. A lay end for a loom operating with a picker and picker stick, said lay end formed of sheet metal and having a rib struck from the body thereof and forming a support along which the picker moves, said lay end having a slot through which the picker extends and the rib defining one edge of the slot, a portion of the lay end being disposed to engage the picker stick and prevent the latter from engaging the rib.

In testimony whereof I have hereunto affixed my signature.

CARL J. LINDEGREN. 

